---
title: Notification.onshow
slug: Web/API/notification/onshow
tags:
  - Notification.onshow
translation_of: Web/API/Notification/onshow
---
<p>{{APIRef("Web Notifications")}}</p>

<h2 id="Summary" name="Summary">Summary</h2>

<p>{{domxref("Notification")}} 接口的onshow属性指定一个事件侦听器来接收 {{event("show")}}事件。</p>

<p>当一个 {{domxref("Notification")}} 显示时，会发生这些事件。</p>

<h2 id="Syntax" name="Syntax">Syntax</h2>

<pre class="eval">Notification.onshow = function() { ... };
</pre>

<h2 id="Specifications">Specifications</h2>

<p>This event handler is no longer listed in the <a href="https://notifications.spec.whatwg.org/">Notifications API spec</a>.</p>

<h2 id="Browser_compatibility">Browser compatibility</h2>

<p>{{Page("/en-US/docs/Web/API/Notification","Browser compatibility")}}</p>

<h2 id="See_also">See also</h2>

<ul>
 <li>{{domxref("Notification")}}</li>
 <li><a href="https://developer.mozilla.org/en-US/docs/Web/API/Notifications_API/Using_the_Notifications_API">Using the Notifications API</a></li>
</ul>